Pipe-thread protector



Nirnn rates ATENT FFIQE \VILLIAM II. PICKETT, OF JVARREN, PENNSYLVANIA, ASSIGNOR TO THE BLAKEY MANUFACTURING COMPANY, OF PITTSBURG, PENNSYLVANIA.

PIPE=THREAD PHROTECITDR. i I

SPECIFICATION forming part of Letters Patent No. 562,339, dated June 16, 1896.

' Application filed December 13,1395. Serial No. 571,993. (No model.)

Zc aZZ whom it may concern: pipe, so that the sleeve which is formed by Be it known that I, WiLLIAM II. PICKETT, bending the strip into cylindrical shape and 35 a citizen of the United States, residing at when necessary fastening the overlapping Warren, in the county of lVarren and State ends together, will entirely cover such thread- 5 of Pennsylvania, have invented or discovered ed portions. One or more internal proj ections a certain new and useful Improvement in 2, adapted to engage the threads of the pipe, Pipe-Thread Protectors, of which improveare formed by forcing in a portion of the metal 40 ment the following is a specification. of the sleeve by means of a suitably-shaped The invention described herein relates to punch, which may be constructed to partially to certain improvements in protectors for the severthe forced-in portions, as shown. hen threaded ends of pipes, &c., and has for its two or more projections are employed, they ob ject the construction of a thin metal sleeve are formed ona 'spiral line having a pitch 4 5 having an internal diameter approximately corresponding to that of the threads to be equal to the external diameter of the pipe to protected. The metal at the outer end: of I 5 which it is to be applied and provided with the sleeve, is bent to form an inwardly-proone or more internal projections adapted to jecting flange 3, adapted to bear against the engage the threads of the pipe and formed by end of the pipe thereby preventing the sleeve 50 bending in a portion of the metal of the sleeve. from being screwed too far upon the pipe and The invention is hereinafter more fully dealso protecting the thread at the extreme end 20 scribed and claimed. of the pipe.

in the accompanying drawings, forming a I claim herein as my inventionpart of this specification, Figure l is a per- A pipe-thread protector consisting of a spective View of a protector constructed in metal sleeve having a portion of the metal accordance with my invention applied to the thereof partially severed from the slee'veand 2 J threaded end of a pipe, and Fig. 2 is a secent inwardly, thereby forming an internal tional elevation of the same. projection adapted to engage-tln threads of In the practice oi my invention the sleeve the. pipe, substantially as set forth. 6o 1 is formed of a strip of sheet metal of such In testimony whereof I have hereunto set a gage or thickness that when bent and semy hand. 3o cured in annular shape the resulting sleeve' will have a considerable degree of stiffness or Witnesses: rigidity. The strip, if made of awidth greater THOS. VHITE, than the length of the threaded portion of the E. H. 'lRUsHEL.

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